| 不同条件下三维边坡失稳规律的数值模拟 |
| |
| 引用本文： | 张科,曹平,刘紫曜,胡惠华,龚道平.不同条件下三维边坡失稳规律的数值模拟[J].中国有色金属学会会刊,2011,21(11):2490-2502. |
| |
| 作者姓名： | 张科 曹平 刘紫曜 胡惠华 龚道平 |
| |
| 作者单位： | 中南大学资源与安全工程学院;湖南省交通规划勘察设计院; |
| |
| 基金项目： | Project (10972238) supported by the National Natural Science Foundation of China; Project (2010ssxt237) supported by the Excellent Doctoral Thesis Program of Central South University,China |
| |
| 摘 要： | 采用强度折减法研究二维和三维边坡的失稳机理。通过大量的算例,分析边界条件、强度参数和坡顶超载的三维效应,并与二维计算方法的结果进行对比,确定二维和三维计算方法的适用范围。数值模拟的计算结果表明,三维效应对滑体宽度很敏感;而对于特定的边坡几何尺寸,三维效应则受无量纲参数c/（γHtanφ）的影响。对于坡顶承受荷载的无限长边坡,边坡失稳模式主要受到荷载的影响。而对于同时受到物理边界和坡顶超载作用的边坡,失稳模式会受到两者的影响;随着荷载长度的增加,边界条件的影响更加显著。进而提出二维和三维的边坡稳定分析图,可以快速、可靠地确定二维和三维安全系数,且不需要任何迭代。最后,基于边坡三维效应和边坡稳定分析图的研究,总结一套简单实用的边坡计算流程,判断何时该采用二维或三维计算方法。
|
| 关 键 词： | 三维边坡 边坡稳定 三维效应 强度折减法 破坏机理 |
| 收稿时间： | 23 September 2010 |
Simulation analysis on three-dimensional slope failure under different conditions |
| |
| ZHANG Ke,CAO Ping,LIU Zi-yao,HU Hui-hua,GONG Dao-ping .School of Resources , Safety Engineering,Central South University,Changsha ,China,.Hunan Provincial Communication Planning Survey , Design Institute,Changsha.Simulation analysis on three-dimensional slope failure under different conditions[J].Transactions of Nonferrous Metals Society of China,2011,21(11):2490-2502. |
| |
| Authors: | ZHANG Ke CAO Ping LIU Zi-yao HU Hui-hua GONG Dao-ping School of Resources Safety Engineering Central South University Changsha China Hunan Provincial Communication Planning Survey Design Institute Changsha |
| |
| Affiliation: | ZHANG Ke1,CAO Ping1,LIU Zi-yao1,HU Hui-hua2,GONG Dao-ping2 1.School of Resources and Safety Engineering,Central South University,Changsha 410083,China,2.Hunan Provincial Communication Planning Survey and Design Institute,Changsha 410008 |
| |
| Abstract: | The failure mechanism of two-dimensional(2D) and three-dimensional(3D) slopes were investigated by using the strength reduction method.An extensive study of 3D effect was conducted with respect to boundary conditions,shear strength and concentrated surcharge load.The results obtained by 2D and 3D analyses were compared and the applicable scope of 2D and 3D method was analyzed.The results of the numerical simulation show that 3D effect is sensitive to the width of slip surface.As for slopes with specific geo... |
| |
| Keywords: | three-dimensional slope slope stability three-dimensional effect strength reduction method failure mechanism |
| 本文献已被 CNKI 维普 ScienceDirect 等数据库收录！ |
|
